* @return The user-friendly artifact id, never {@code null}.
     */
    static String toId(String groupId, String artifactId, String version) {
        StringBuilder buffer = new StringBuilder(128);

        buffer.append((groupId != null && !groupId.isEmpty()) ? groupId : "[unknown-group-id]");
        buffer.append(':');
        buffer.append((artifactId != null && !artifactId.isEmpty()) ? artifactId : "[unknown-artifact-id]");

  <modelVersion>4.0.0</modelVersion>

  <parent>
    <groupId>ut.simple</groupId>
    <artifactId>parent</artifactId>
    <version>1.0</version>
  </parent>

  <artifactId>artifact</artifactId>

  <name>Simple Unit Test Artifact</name>

  <dependencies>
    <dependency>
      <groupId>ut.simple</groupId>
      <artifactId>dependency</artifactId>
    </dependency>
    <dependency>

            </dependency>
          </dependencies>
        </plugin>
        <plugin>
          <groupId>org.codehaus.mojo</groupId>
          <artifactId>animal-sniffer-maven-plugin</artifactId>
          <version>1.23</version>
          <dependencies>
            <dependency>
              <groupId>org.ow2.asm</groupId>
              <artifactId>asm</artifactId>
              <version>9.6</version>
            </dependency>

            </dependency>
          </dependencies>
        </plugin>
        <plugin>
          <groupId>org.codehaus.mojo</groupId>
          <artifactId>animal-sniffer-maven-plugin</artifactId>
          <version>1.23</version>
          <dependencies>
            <dependency>
              <groupId>org.ow2.asm</groupId>
              <artifactId>asm</artifactId>
              <version>9.6</version>
            </dependency>

<project>
  <modelVersion>4.0.0</modelVersion>
  <groupId>maven-test</groupId>
  <artifactId>scope-default</artifactId>
  <version>1.0</version>
  <dependencies>

    <dependency>
      <groupId>maven-test-default</groupId>
      <artifactId>scope-default</artifactId>
      <version>1.0</version>
    </dependency>

    <dependency>
      <groupId>maven-test-default</groupId>
      <artifactId>scope-test</artifactId>

<project>
  <modelVersion>4.0.0</modelVersion>
  <groupId>maven-test</groupId>
  <artifactId>scope-test</artifactId>
  <version>1.0</version>
  <dependencies>

    <dependency>
      <groupId>maven-test-test</groupId>
      <artifactId>scope-default</artifactId>
      <version>1.0</version>
    </dependency>

    <dependency>
      <groupId>maven-test-test</groupId>
      <artifactId>scope-test</artifactId>

    <dependency>
      <groupId>com.google.inject</groupId>
      <artifactId>guice</artifactId>
      <scope>provided</scope>
    </dependency>
    <dependency>
      <groupId>org.apache.maven</groupId>
      <artifactId>maven-jline</artifactId>
    </dependency>
    <dependency>
      <groupId>org.slf4j</groupId>
      <artifactId>slf4j-api</artifactId>
    </dependency>
    <dependency>
      <groupId>commons-cli</groupId>

            <groupId>org.junit.jupiter</groupId>
            <artifactId>junit-jupiter-params</artifactId>
            <version>${junit.version}</version>
        </dependency>
        <dependency>
            <groupId>org.junit.jupiter</groupId>
            <artifactId>junit-jupiter-api</artifactId>
            <version>${junit.version}</version>
        </dependency>
        <dependency>

<project>
  <parent>
    <artifactId>p0</artifactId>
    <groupId>maven</groupId>
    <version>1.0</version>
  </parent>
  <modelVersion>4.0.0</modelVersion>
  <groupId>maven</groupId>
  <artifactId>p1</artifactId>
  <packaging>pom</packaging>
  <name>p1</name>
  <version>1.0</version>
  <scm>
    <url>scm-url</url>
  </scm>

<project>
  <parent>
    <artifactId>p2</artifactId>
    <groupId>maven.t01</groupId>
    <version>1.0</version>
  </parent>
  <modelVersion>4.0.0</modelVersion>
  <groupId>maven.t01</groupId>
  <artifactId>p3</artifactId>
  <packaging>pom</packaging>
  <name>p3</name>
  <version>1.0</version>
  <organization>
    <name>p3-org</name>
  </organization>